The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.

A2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for
分析该选项

B2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
分析该选项

C2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
分析该选项

D2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
分析该选项

E2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least
分析该选项